Apparatus for regulating supply of water.



No. 650,520. Patented May 29, I900. J. A. SERRELL.

APPARATUS FOR REGULATING SUPPLY OF WATER.

(Application filed Apr. 14, 1899.) No Model.) 2 shaets sheet I.

Wlinedaed' No. 650,520. Patented May 29, I900.

J. A. SEBRELL. APPARATUS FOR REGULATING SUPPLY OF WATER;

(Application filed Apr. 14 1899.) (No Model.)

2 Sheets-Sheet 2.

UNITED A STATES I PATENT OFFICE.

JOHN A. SERRELL, OF BAYONNE, NEW JERSEY, ASSIGNOR TO THE \VARREN \VEBS TER & COMPANY, OF NE\V JERSEY.

APPARATUS FOR REGULATING SUPPLY OF WATER- SPECIFICATION forming part of Letters iatent No. 650,520, dated May 29, 1900.

Application filed April 14, 1899. $81iiLINO-71Z985. on model.)

To all whom 212'; may concern:

Be it known that I, JOHN A. SERRELL, of Bayonne, Hudson county, State of New J ersey, have invented an Improvement in Appa ratus for Regulating the Supply of Water to Feed-Water Heaters, &c., of which the following is a specification.

My invention relates to apparatus for regulating the supply of water to feed-water heaters, &c.; and it consists of the improvements which are fully set fol-thin the following specification and are shown in the accompanying drawings. In supplying Water to a feed-water heater or other closed receptacle where by reason of the construction of the buildingor for any other cause sufficient elevation for the supply-tank cannot be obtained to utilize hydrostatic pressure much difficulty is experienced. In such cases means must be employed to force the water from the supply-tank into the heater or receptacle, and as the pressure in the heater is variable means must be employed to regulate the pressure employed to force the water from the supply-tank.

It is the object of my invention to enable the water to be forced from the supply-tank into the receptacle by a fixed differential pressure, and thus to insure the supplying of the water to the heater or receptacle notwith standing variations in the pressure therein.

My invention is fully illustrated in the accompanying drawings, in which- Figure l is a side elevation with parts in in section of the differential valve device employed in carrying out myinvention, and Fig. 2 is a diagrammatic view illustrating my apparatus for regulating the supply of water to afeed-waterheater or other closed receptacle.

I is a feed-water heater closed to the atmosphere and adapted'to receive water from a closed tank J through a water-seal pipe K.

L is an overflow-pipe from the tank J.

M is a pump discharging water into the tank J. As shown, the pump M is connected with the return N of a steam-heating system and discharges the water of condensation into the tank J. I

A is a valve located in the outflow-pipe L.

D and E are'fluid-pressure motors communicating, respectively, with the heater I and tank J and oppositely connected with the valve A by a lever B.

The details of the valve-controlling mechanism are shown in Fig. 1. The lever B is hinged, as at b,to asuitable frame 0 and is connected, as by a hinge c, with the valve-stem a, which passes through a suitable stuffingbox in the valve-casing A. The fluid-motors D and E are locatedone 011 each side'of the fulcrum b and are operatively connected with the lever B. Each of the motors consists of a chamberF, closed at the top bya diaphragm G, supporting externally a disk or plate H, hinged to the lever B, so that any movement of either diaphragm will correspondingly rock the lever B on its pivot and produce a proportional movement of the valve A. The inotors D and E communicate, respectively, through pipes d and c with the heater or receptacle I and the tank J. It is apparent that if the valve is arranged to occupy a given position, with the motorsD E acting under given relative pressures, any variation of the pressure in either motor will produce a corresponding movement of the valve A, and thus increase ordecrease the flow of water through the pipe L. \Vhile the valve Ais closed, the overflow or waste of water from the tankJ is prevented, and the pressure accumulated in the tank will be sufficient to force the water through the pipe K into the heater 1. Any excess of pressure in the tank J will operate the motor E and open the valve A and allow the water to escape until the excess of pressure in the tank J is relieved, and any increase of pressure in the heater I will maintain the valve closed, and thus enable a sufficient excess of pressure to accumulate in the tank J to force the water into the heater against the increased pressure therein. Thus the valve device acts to maintain a fixed difference in pressure between the tank J and heater I sufficient to insure a flow of water into the heater irrespective of changes in the pressure within it.

By suitably adjusting a counterweight W on the lever B the relative effective pressures 0f the motors D and E may be varied to vary the differential pressure to be maintained between the tank J and heater I.

Instead of loading the lever B, as shown, to maintain an excess of load on the motor E, so that the valve A will remain closed until the pressure in the tank J is in excess of that in the heater, the excess of load may be placed on the motor D to maintain the valve A open until a certain pressure is obtained in the heater, when the valve will close and remain closed until an excess of pressure is accumulated in the tank J.

I have shown a differential valve device of similar character applied to the return-pipe N and steam-supply pipe 0 O to the pump M for the purpose of maintaining a constant differential between the supply and return ends of asteam-heating system.

lVhile- I show my invention as applied to a feed-Water heater, I do not mean to limit myself thereto, as the invention may obviously be embodied in any apparatus in which water or other fluid is to be forced from a closed tank into a closed receptacle by differential pressure between the two, nor do I mean tolimit myself to the particular construction of the differential valve device shown, as that may be varied without departing from the invention.

What I claim as new, and desire to secure by Letters Patent, is as follows:

, 1'. In an apparatus of the character described, the combination of a closed vessel or supply-tank, a closed receptacle adapted toreceive water or other fluid therefrom, a supply-pipe leading from said supply-tank to the closed receiving vessel, a relief-outlet from said supply-tank, a differential valve device for controlling said relief-outlet operated by variation in the relative pressures in said'supply-tank and receiving vessel.

2. In an apparatus of the character described, the combination of a closed vessel or supply-tank, a closed receptacle adapted to receive water or other fluid therefrom, a supply-pipe leading from said supply-tank to the closed receiving vessel, a relief-outlet from said supply-tank, a valve in said reliefoutlet, and two fluid-pressure motors communicating one with said supply-tank and the other with said receiving vessel and each connected with said valve by oppositely-aeting connections, substantially as and for the purposes described.

3. In an apparatus of the character described, the combination of a closed vessel or supply-tank, a closed receptacle adapted to receive Water or other fluid therefrom, a supply-pipe leading from said supply-tank to the closed receiving vessel, a relief-outlet from said supply-tank, a valve in said relief outlet, two fluid-pressure motors communicating one with said supply-tank and the other with said receiving vessel and each connected with said valve by oppositely-acting connections, and adjusting devices acting simultaneously on both of said motors to regulate the differential pressures to be maintained between said supply-tank and receiving vess'el, substantially as and 'for the purposes described. y

In testimony of which invention I hereunto set my hand.

JOHN A. SERRELL. lVitnesses:

JOHN G. EADIE, W. II. CHAPMAN. 

